diff options
Diffstat (limited to 'libpeci/peci.c')
| -rw-r--r-- | libpeci/peci.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/libpeci/peci.c b/libpeci/peci.c index 1d97b93..fee87f2 100644 --- a/libpeci/peci.c +++ b/libpeci/peci.c @@ -898,6 +898,81 @@ EPECIStatus peci_RdEndPointConfigMmio_seq( } /*------------------------------------------------------------------------- + * This internal function is the common interface for WdEndPointConfig to PCI + *------------------------------------------------------------------------*/ +static EPECIStatus peci_WrEndPointConfigCommon(uint8_t target, + uint8_t u8MsgType, uint8_t u8Seg, + uint8_t u8Bus, uint8_t u8Device, + uint8_t u8Fcn, uint16_t u16Reg, + uint8_t DataLen, + uint32_t DataVal, uint8_t* cc) +{ + int peci_fd = -1; + struct peci_wr_end_pt_cfg_msg cmd; + EPECIStatus ret; + + if (cc == NULL) + { + return PECI_CC_INVALID_REQ; + } + + // Per the PECI spec, the write length must be a byte, word, or dword + if (DataLen != 1 && DataLen != 2 && DataLen != 4) + { + return PECI_CC_INVALID_REQ; + } + + if (peci_Open(&peci_fd) != PECI_CC_SUCCESS) + { + return PECI_CC_DRIVER_ERR; + } + + cmd.addr = target; + cmd.msg_type = u8MsgType; + cmd.params.pci_cfg.seg = u8Seg; + cmd.params.pci_cfg.bus = u8Bus; + cmd.params.pci_cfg.device = u8Device; + cmd.params.pci_cfg.function = u8Fcn; + cmd.params.pci_cfg.reg = u16Reg; + cmd.tx_len = DataLen; + cmd.value = DataVal; + + ret = HW_peci_issue_cmd(PECI_IOC_WR_END_PT_CFG, (char*)&cmd, peci_fd); + *cc = cmd.cc; + + peci_Close(peci_fd); + return ret; +} + +/*------------------------------------------------------------------------- + * This function provides write access to the EP local PCI configuration space + *------------------------------------------------------------------------*/ +EPECIStatus peci_WrEndPointPCIConfigLocal(uint8_t target, uint8_t u8Seg, + uint8_t u8Bus, uint8_t u8Device, + uint8_t u8Fcn, uint16_t u16Reg, + uint8_t DataLen, uint32_t DataVal, + uint8_t* cc) +{ + return peci_WrEndPointConfigCommon(target, PECI_ENDPTCFG_TYPE_LOCAL_PCI, + u8Seg, u8Bus, u8Device, u8Fcn, u16Reg, + DataLen, DataVal, cc); +} + +/*------------------------------------------------------------------------- + * This function provides write access to the EP local PCI configuration space + *------------------------------------------------------------------------*/ +EPECIStatus peci_WrEndPointPCIConfig(uint8_t target, uint8_t u8Seg, + uint8_t u8Bus, uint8_t u8Device, + uint8_t u8Fcn, uint16_t u16Reg, + uint8_t DataLen, uint32_t DataVal, + uint8_t* cc) +{ + return peci_WrEndPointConfigCommon(target, PECI_ENDPTCFG_TYPE_PCI, u8Seg, + u8Bus, u8Device, u8Fcn, u16Reg, DataLen, + DataVal, cc); +} + +/*------------------------------------------------------------------------- * This function provides crashdump discovery data over PECI *------------------------------------------------------------------------*/ EPECIStatus peci_CrashDump_Discovery(uint8_t target, uint8_t subopcode, |